Hydro Flask® Sport Replacement Caps are BPA and free and were specifically designed with the athlete in mind. Whether you're running, riding your bike, hiking, or in the yoga studio, the Sports Cap will get you the hydration you need with ease and speed.
- Hydro Flask® Sport Replacement Caps are made from polypropylene, which means they are BPA-Free.
- Two different sizes for different bottles.
- Standard Sport replacement cap will only fit a Hydro Flask® bottle with a standard mouth opening.
- Narrow Sport replacement cap will only fit a Hydro Flask® bottle with a narrow mouth opening.
